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Howell Laboratories, Inc.

P. O. Box 389, 188 Harrison Rd., Bridgton Maine 04009 USA
(207) 647-3327 (888) 744-8359 FAX (207) 647-8273 contracts@howelllabs.com

- An Employee-Owned Company -
Certified to ISO 9001:2000

Parts for Model 4870

NOTE: This list does not include hardware items such as bolts, nuts, washers, and O-rings. The manufacturer uses stainless steel hardware in standard U. S. sizes, and MIL-SPEC O-rings.
Howell Laboratories, Inc. is CAGE 22501.

HLI Group No. G511 G512 G513 G521 G522 G531
U. S. Navy Type: IA IB IC IIA IIB III
Technical Manual: (all groups) S9551-BG-MMA-010

Part
Description
HLI Part No.
(NSN)
Quantity per Unit

Humidity Alarm Controller 5219
(6685-01-260-6068)
1 1 1 1 1 1
Alarm Lamp 3907-G503
(6210-01-280-3356)
1 1 1 1 1 1
Replacement Lamp Bulb 3907-06 2 ref 2 ref 2 ref 2 ref 2 ref 2 ref
Lamp-Test Push Button Switch 4508 1 1 1 1 1 1
Lamp Flasher Unit 4901
(5945-01-193-0058)
1 1 1 1 1 1
Fuse 3043-09
(5920-01-113-6825)
1 1 1 1 1 1
Humidity Sensor 3905-03
(6685-01-246-0261)
1 1 1 1 1 1
Valve, angled globe 4891
(4820-01-259-8771)
5 5 5 5 5 5
Packing Set, angled globe valve 4891-02 5 ref 5 ref 5 ref 5 ref 5 ref 5 ref
Bonnet O-Ring, angled globe valve 4891-03 5 ref 5 ref 5 ref 5 ref 5 ref 5 ref
Seat Ring, angled globe valve 4891-05 5 ref 5 ref 5 ref 5 ref 5 ref 5 ref
Disc Assembly, angled globe valve 4891-06 5 ref 5 ref 5 ref 5 ref 5 ref 5 ref
Valve, globe needle 4874
(4820-01-189-8519)
1 1 1 1 1 1
Packing Set, globe needle valve 4874-02 5 ref 5 ref 5 ref 5 ref 5 ref 5 ref
Bonnet O-Ring, globe needle valve 4874-03 5 ref 5 ref 5 ref 5 ref 5 ref 5 ref
Seat Ring, globe needle valve 4874-05 5 ref 5 ref 5 ref 5 ref 5 ref 5 ref
Disc Assembly, globe needle valve 4874-06 5 ref 5 ref 5 ref 5 ref 5 ref 5 ref
Filter Element with gaskets, In-Line Filter 4876-02
(4330-00-403-4774)
1 1 1 1 1 1
O-Ring, In-Line Filter Housing Seal MS9021-023 1 1 1 1 1 1
Pressure Regulator, intermediate 5300-G503
(4820-01-232-2447)
1 1 1 1 1 1
Overhaul Kit, intermediate pressure regulator 5300-2/7 1 ref 1 ref 1 ref 1 ref 1 ref 1 ref
Overhaul Kit, intermediate pressure regulator 5300-10 1 ref 1 ref 1 ref 1 ref 1 ref 1 ref
Flowmeter 5259-G501
(6680-01-152-2825)
1 1 1
5259-G502 1 1
4872-G503 1
Pressure Regulator, Outlet 5300-G501 1 1
5300-G502 1 1 1
Overhaul Kit, Outlet Pressure Regulator (for P/N 5300) 1 ref 1 ref 1 ref 1 ref 1 ref
Pressure Relief Valve 4875-G503 1
4875-G504 1
4875-G505
(4820-01-140-4341)
1 1
4875-G506 1
4875-G507 1
Adjusting Tool, Relief Valve 4875-08 1 1 1 1
4875-10 1 1
Nut Driver, Relief Valve 4875-09 1 1 1 1
4875-11 1 1
Spring, Relief Valve 4875-14 ref
4875-15 ref
4875-16 ref ref
4875-17 ref
4875-18 ref
Quad Ring, Relief Valve 4875-20 ref ref ref ref
4875-21 ref ref
Pressure Gauge, inlet 4871-06
(6685-00-591-1952)
1 1 1 1 1 1
Pressure Gauge, intermediate 4871-04
(6685-00-850-0975)
1 1 1
4871-05
(6685-01-175-3428)
1 1
Pressure Gauge, outlet 4871-01
(5-10 psig)
or 5040-G501
(3-5 psig)
or 5040-G502
(0-3.3 psig)
1
4871-02 1
4871-03
(6685-01-260-7140)
1 1
4871-04
(6685-00-860-0975)
1
4871-05
(6685-01-175-3428)
1
Purge Test Fitting 4915 1 1 1 1 1 1
O-Ring, All 1/4" Unions M83248/2-017
(5330-00-166-1088)
16 16 16 16 16 16
O-Ring Retainer, All 1/4" Unions 3899-01
(5365-01-088-3154)
16 16 16 16 16 16

Last updated: 03/19/2008
Webmaster: Al Friend
© 2002-2008 Howell Laboratories, Inc. All rights reserved.